S-92224A116 4-40 x 1/2" ASME B18.6.3 Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black oxide steel finish, providing reliable performance in demanding industrial environments
• Superior holding power achieved through fully threaded design and 60,000 psi tensile strength for secure fastening applications
• Optimized drive engagement with Phillips No. 1 drive style ensuring efficient installation and reduced cam-out risk
• Precise thread compatibility with 4-40 UNC coarse threads and Class 2A fit for consistent performance across standard applications
• Excellent material durability featuring Rockwell B70 hardness for long-term reliability under mechanical stress
• Streamlined assembly process with pan head design offering low-profile installation and right-hand threading for conventional applications
• Regulatory compliance assurance meeting ASME B18.6.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

These 4-40 UNC coarse thread pan head screws deliver exceptional engineering value in industrial fastening scenarios where reliability and precision are paramount. The black oxide steel construction provides superior corrosion resistance, making these Phillips drive screws ideal for machinery assembly, electronic enclosures, and automotive components where environmental factors could compromise fastener integrity. The fully threaded design ensures maximum thread engagement along the entire 1/2" length, distributing clamping force evenly and preventing loosening under vibration. With Rockwell B70 hardness and 60,000 psi tensile strength, these screws maintain structural integrity in high-stress applications while the standardized Class 2A thread fit guarantees compatibility with existing UNC threaded components, reducing installation time and eliminating compatibility issues in production environments.

Specification Summary & Compliance

This rounded head screw features precise 4-40 UNC coarse threads with Class 2A thread fit tolerance, ensuring consistent performance across industrial applications. Manufacturing compliance includes ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. Environmental and safety certifications include RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance, confirming adherence to international regulatory standards for hazardous substances restriction.